code: def generate_text_feature() -> Series:
      return Series(
          [
              "hello world",
              "sentence breaks.",
              "",
              "unique words",
              "the end of the sentence",
              "goodbye world",
              "the end is not the end is not the end is not the end is not the end",
              "the end of the world",
              "sentence. breaks. sentence. breaks. sentence. breaks. sentence. breaks.",
          ]
      )
  
imports: import copy
  import numpy
  import pandas
  import pytest
  from pandas import DataFrame, Series
  from autogluon.common.features.feature_metadata import FeatureMetadata
  from autogluon.features.generators import AbstractFeatureGenerator
label_desc: Use image node_id 6 for calling the DataHelper obj's underlying member method code with example usage: obj.generate_text_feature() and returns: Series